Chemistry of potassium availability in soil

Abstract

Importance of nutrients for plants growth and for food production is unavoidable. These are one of the most important factor which limits growth and production. Many soils being rich in primary nutrients are still considered deficient in available form of nutrients and have to supply with external sources of nutrients. It is also evident in many soils that after external source application, nutrients get fixed in soil very quickly and this all occur because of reaction or chemistry happening in soil. Potassium (K) is one the most important primary nutrient element and its uptake is similar to uptake quantity of nitrogen but it has to face negligence problem and can be understand as earlier Indian soil was in medium to high potassium status and due to negligence of importance of K and its application in soil, K deficiency is now emerging in many regions of Indian soil. This issue discusses the importance of K and chemistry behind its availability and deficiency in soil.